"silent" <fin@tele2adsl.dk> wrote in message 
news:4p99f.856$cU7.522@news.get2net.dk...
> Hej
>
> lige pludselig en aften forsvandt min dvdbrænder og min dvd +mine scsi 
> cdrom+brænder men ikke mine scsi harddiske,hvad fanden er der sket,har 
> prøvet alt undtagen genins
Du har sikkert netop afinstalleret et program med egen brænder-funktion 
indbygget!??
Dette er sikkert løsningen:
Husk backup af RegDB-Nøgler først!
To resolve this behavior, follow these steps:
Start Registry Editor (Regedt32.exe).
Locate the UpperFilters value under the following key in the registry:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro 
l\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}
On the Edit menu, click Delete, and then click OK.
Locate the LowerFilters value under the same key in the registry:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro 
l\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}
On the Edit menu, click Delete, and then click OK.
Quit Registry Editor.NOTE: After you remove the Upperfilters value and the 
Lowerfilters value, if you notice lost functionality in a particular 
program, such as CD recording software, you may need to reinstall that 
software. If the problem recurs, consult with the software vendor for 
assistance.
Link 
http://www.cdrom-guide.com/forums/showthread.php?p=1510899#post1510899